Photographic camera



Jan. 28, 1936. M. BURGER PHOTOGRAPHIC CAMERA v Filed. Sept. 6, 1934 2 Sheet's-Sheet l Fig. 7

Michael Burger IN VEN TOR A TTORNE Y Jan. 28,1936 MBURGER 2 @2s,752

PHOTOGRAPHIC CAMERA Filed Sept. 6, 1954 2 Sheets-Sheet 2 Fig. 8

Fig. 9

Fig. 40

Fig. 4/.

Michael Burger IN VENT OR A TTORNEY Patented Jan. 28, 1936 UNITED STATES PHOTOGRAPHIC CAltfl-IRA Michael Burger, Munich, Germany, asaignor to Friedrich Deckel, Munich-Prinz Ludwigshohe,

Germany Application September 6, 1934, Serial No. 742,954 In Germany September 11, 1933 14 Claims.

This invention relates to photographic cameras and particularly to cameras of the type in which there is mechanism interconnecting the camera shutter with the means for feeding the film or other sensitized material. An object of the invention is the provision of a generally improved and more satisfactory camera of the type above indicated.

Another object is the provision of a camera of this type so designed and constructed that bulb and time exposures can be made, as well as the usual instantaneous" exposures.

A further object of the invention is the provision of a camera including a shutter of the set type and mechanism for setting or tensioning the shutter by the feeding of the sensitized material when ordinary instantaneous exposures are to be made, in combination with means for rendering this setting mechanism inoperative so that bulb" and time exposures can be made when desired.

To these and other ends the invention resides in certain improvements and combinations of parts, all as will be hereinafter more fully described, the novel features being pointed out in the claims at the end of the specification.

In the drawings:

Fig. 1 is a plan of a camera constructed in accordance with one embodiment of the invention;

Fig. 2 is a front elevation thereof;

Fig. 3 is a view of the top coverof the camera shown in Figs. 1 and 2, viewed from below;

Fig. 4 is a view partly in plan and partly in horizontal section of part of the camera shown in 36 Figs. 1 and 2, with the parts set for making an instantaneous exposure;

Fig. 5 is a view partly in elevation'and partly in vertical section of the parts shown in Fig. 4, similarly set for an instantaneous exposure;

Fig. 6 is a view similar to Fig. 4 showing the parts set for a bulb or time exposure;

Fig. 7 is a view similar to Fig. 5 with the parts likewise in the bulb or time position;

Fig. 8 is a view similar to Fig. 4 showing a slightly diiferent embodiment -of the invention, with the parts set for an instantaneous exposure;

Fig. 9 is a view pa'rtlypin elevation and partly in vertical section of the mechanism shown in F 8; Fig. 10 is a view similar to Fig. 8 with the parts in position for a bulb or time exposure; and

'Fig. 11 is a view similar to Fig. 9 with the parts set for a bulb or time exposure.

The same reference numerals throughout the several views indicate the same parts.

Referring. now to the embodiment shown in Figs. 1 to 7, inclusive, there is indicated a camera having a main body or housing I, the top of which is closed by a top cover 2, and the bottom of which is provided with a bottom cover 3. At the 5 front of the main housing I there is a lens 4 and a shutter indicated in general by the numeral 5. Focusing may be accomplished in any known manner, either by moving the lens 4 alone, or by moving both the lens and the shutter. 10

This shutter is of the so-called set type as distinguished from the automatic type. That is, the shutter is one in which the spring or other motor element ofthe shutter is to be set or tensioned previous to the making of an exposure, 15 the motor element being later released as a separate act, when the exposure is to be made. Shutters of this general type are well known, and one suitable for the purpose of the present invention is disclosed, for example, in Deckel Patent 20 1,687,123, granted October 9, 1928.

In the shutter shown in the Deckel patent, as well as in most other shutters of the set type, the setting or tensioning of the shutter is necessary when a so-called instantaneous exposure is 26 to be made, but is neither necessary nor desirable when so-c'alled bulb and time exposures are to be made. Consequently, if some provision is made for setting or tensioning the shutter through the movement of the means for feeding 30 the film or other sensitized material, it follows that the camera can be used only for instantaneous exposures unless there is provided some way in which the automatic setting mechanism can be disconnected or made ineffective when it 35 is desired to make bulb or time exposures. The camera of the present invention provides automatically operating setting or tensioning mechanism and also means for disconnecting this mechanism or rendering it ineffective, so that 40 the improved camera herein disclosed can be used readily either for exposures of the instantaneous kind or for exposures of the bulb or time kind in which no previous setting or tensioning of the shutter takes place.

The means for feeding the film or other sensitized material may be of any known kind, including, for example, a knob 6 mounted on the top cover 2 and secured to a shaft 1 extending downwardly through the cover, the knob 6 when turned 50 in the direction of the arrow 8, being effective in known manner to feed a fresh supply of sensitized material into the focal plane of the camera.

According to the present invention, the shaft I is provided, just beneath the cover 2, with a pinion 9 (Fig. 3) which meshes with a rack bar Ill pro V ,videdat one end with a downturned ear A spring l2 normally tends to keep the rack bar at one end of its path of travel, but permits to be moved rightwardly from the position 3, when the shaft 1 is-rotated by mentioned) and an actuating or release lever 6 (corresponding, for example, to the release lever |0| of said Deckel patent).- For convenience of operation, the camera is provided with a plunger extending upwardly throughthe top cover 2, which is operatively connected to a lateral pin it which, in turn, is connected to the release lever i6. Thus, instead of reaching around to the front of the camera to operate the release lever directly, the person using the camera may simply depress the plunger l1, readily accessible at the topof the camera, and this, through pin l8, will operate the lever l6 and make the exposure.

The setting or tensioning lever 5 is operated, according to the present inventio by a ring l9 which is rotatable on a cylindrical part 26 of the shutter'casing,.-;so-that the ring IS in effect can be oscillated about the optical axis of the shutter as a center. This ring I3 is provided with three arms, denoted respectively by the numerals 2|,

22, and 23. Of these, the arm 2 I extends obliquely upwardly as shown in Fig. 5 to a position lying, under certain conditions, in the path of travel of the ear II on the rack bar ii. The arm 22 projects forwardly to a position in alinement with the setting or tensioning lever I! of the shutter, while the third arm 23 extends rearwardly, as shown in Fig. 4, to a position to cooperate with a crank pin 24 mounted eccentrically on a crank plate 25 which may be turned by a knob 26 at the top of the camera. A spring 21, secured at one end to the ring |9- and at the other end to any suitable fixed point, constantly tends to turn the ring in a clockwise direction when viewed from the rear as in Fig. 5, so that the arm 23 on the ring I6 is constantly held against the pin 24.

When taking the usual instantaneous exposures, the crank pin 24 is in the position shown in Fig. 4 and an index mark on the knob 26 is opposite the notation I" on the cover. as shown in Fig. l. The parts are then in the position shown in Figs. 4 and 5, with the arm 2| on the ring I3 lying in the path of travel of the ear II on the rack bar It. Consequently, each time that the feeding means 6 is operated to feed a fresh supply of sensitized material into proper position, the rack bar If moves rightwardly when viewed as in Fig'. 3 or leftwardly when viewed as in Fig. 5. and this moves the arm 2| leftwardly, swinging the ring I! in a colmterclockwise direction and thereby moving the arm 22 to press the setting lever l5 leftwardly (when viewed as in Fig. 4) to set or tension the shutter. The feeding of the sensitired material thus sets the shutter ready for the next exposure, and an instantaneous exposure may thereafter be made merely by depressing the plunger l1, without having to go through the extra operation of setting the shutter.

When the winding knob 6 is released, the springs I2 and 21 return the-parts to their initial positions, but the setting lever II stays in its set or tensioned position until the exposure is made.

When it is desired, on the other hand, to make a bulb or "time" exposure,

is turned from the position shown in Fig. 1,

the Deckel patent above 3 23a of the disk l3. to act as movement of the disk in a clockwise direction.

- 211s then permitted to then the knob 26 so that the index thereon is opposite the notation B, T; on the cover. This moves the crank pin 24 to the position shown in Fig. 6, in which it lies rightwardly of the position shown in Fig.

4. The spring 21 is thus permitted to pull the'rlng is further around in a clockwise direction, to the position shown in Fig. 7, in which the arm 2| has been moved so far that it no longer lies in the path of travel of the end I of the rack bar l6. Consequently, when the film feeding means 6 is operated, the rack bar ill will be moved, but this will have no effect-on the shutter setting mechanism because the end II will move idly past the end of arm 2| .without contacting therewith.

Thus the setting arm I5 of the shutter will not be operated and the shutter will be in condition for a bulb or time exposure in the usual known manner. v Turning now to the alternative embodiment illustrated in Figs. 8 to 11, inclusive, there is shown the same shutter 5, and the parts l5, l3,- 2|, 22, and 21, in this .form of the invention, may be identical with the parts bearing the same numbers in the previously described embodiment, and may operate, in the same way. The arm 23, and its associated parts 24, 25, and 26, are omitted, however, in this embodiment. Instead, there is provided a short arm 23a on the ring 46, which cooperates with one end 35 of a bell crank lever 3| pivoted at 30 to the shutter casing.

The shutter is provided with an adjusting disk 34 (corresponding, for example, to the adjusting disk 63 of said Deckel patent) which can be turned to diil'eren-t positions to adjust the shutter for making difl'erent kinds of exposures (for example, instantaneous exposures and time exthe bell crank lever 3| when the disk 34 is set for time'or for bulb exposure. When set for instantaneous exposures, however, the recess 36 is no longer opposite the end 33- of the lever 3|, and

the lever is forced out of the recess to the position shown in Fig. 8. V y

In this form of the invention, when the shutter is set for instantaneous exposures the end 33 of the lever 3| rides on the normal rear surface 01'. the adjusting disk 34. thus holding the other end 35 of the lever against the arm a stop for limiting The disk I3 is thus held in the position shown in Figs. 8 and 9, with the arm 2| lying in the path of travel of the ear II on the rack'bar l3, so that the shutter will be set in the manner previously described, every time that the sensitized material is fed by operationof the feeding knob 6. If the shutter adjusting disk 34 be shifted, however,

to a position for taking time or bulb exposures,

then the recess 36 is brought opposite the end 33 of the bell crank lever, allowing this'end to enter the recess and thus permitting the other ly to the position shown in Fig. 10. The spring move the ring I! further in a clockwise directlon,-to the position shown in Figs. 10 and 11, in which the end of the. ring 2| is out of the path'of travel of the ear H on the rack bar l0 and is not moved thereby, so that the shutter is not tensioned when the film feeding means 6 is operated. If the-disk 34 be moved to adjust the shutter again for an instantaneous exposure, the end'33 of the bell crank lever'will be end 36 of the bell crank lever to move rightwardv cammed out of the recess 36 and the arm -|3 will be shifted back from the position shown in Fig. 11 to the position shown in Fig. 9.

It will now be seen that in both embodiments of the invention, disconnectable mechanism is provided for setting the shutter by the act of feeding the sensitized material. This mechanism, in both cases, includes an operating member [0, ll moved by movement of the feeding means 6, and a second member I9, 2|, 22

, ber of ways. This application is therefore not to be limited to the precise details described, but is intended to cover all variations and modifications thereof falling within the spirit of the invention or the scope of the appended claims.

I claim:

1. A photographic camera comprising a shutter of the set type, means for feeding sensitizedmaterial, mechanism for automatically setting said shutter by operation of said feeding means, and means for rendering said mechanism inoperative.

2. A photographic camera comprising a shutter of the set" type, means for feeding sensitized engaging and disengaging said mechanism.

4. A photographic camera comprising a shutter of the set type, means for feeding sensitized material, disengageable mechanism interconnecting said shutter and said feeding means and effective, when engaged, to set said shutter by operation of said feeding means, and manual means for engaging and disengaging said mechanism at will.

5. A photographic camera comprising a shutter of the set type adjustable to make exposures of a plurality of diiierent kinds, means for feeding sensitized material, mechanism operated by movement of said feeding means for setting said shutter to condition it for making an exposure, and means operable upon adjustment of said shutter for making one kind of exposure to render said mechanism inoperative to set said shutter and operable upon adjustment of said shutter for making another kind of exposure to render said mechanism operative to set said shutter.

6. A photographic camera comprising a shutter of the set type adjustable to make exposures of a plurality of different kinds, means for feeding sensitized material, and mechanism controlled by adjustment of said shutter for different kinds of exposures, for setting said shutter by movement of said feeding means.

disengageable mechanism intercon 7. A photographic camera comprising a shutter of the set type adjustable to make"instantaneous exposures and other exposures, means for feeding sensitized material, mechanism operated by movement of said feeding means, when said shutter is adjusted for making instantaneous exposures, for setting said shutter to condition it for making an exposure, and means operable upon adjustment of said shutter for an exposure other than instantaneous", for rendering said mechanism inoperative.

8. A photographic camera comprising a shutter of the set" type adjustable to make instantaneous" exposures and other exposures, means for feeding sensitized material, mechanism operated by movement of said feeding means, when said shutter is adjusted for making "instantaneous exposures, for setting said shutter to condition it for making an exposure, and means operable automatically by adjustment of said shutter for a non-instantaneous exposure, for rendering said mechanism inoperative so that said shutter will not be set by movement of said feeding means.

9. A photographic camera comprising a shutter of the set type, means for feeding sensitized material, an operating member driven by movement of said feeding means, a second member effective, when moved by said operating member, to set said shutter to condition it for making an exposure, and means for moving saidsecond member from an operative position in which it will be moved by movement of said operating member, to an inoperative position in which it will not be moved by movement of said operating member.

10. A photographic camera comprising a shutter of the set type, means for feeding sensitized material, an operating member driven by movement of said feeding means, a second membereffective, when moved by said operating member, to set said shutter to condition it for making an exposure, and means operable manually at will for moving said second member to and from an operative position with respect to said operating member.

11. A photographic camera comprising a shutter of the set type, means for feeding sensitized material, an operating member driven by movement of said feeding means, a second member effective, when moved by said operating member, to set said shutter to condition it for making an exposure, and means operable automatically by adjustment of said shutter to take different kinds of exposures, for moving said second member to and from an operative position with respect to said operating member.

12. A photographic camera comprising a shutter of the set" type, means for feeding sensitized material, an operating member driven by movement of said feeding means, a second member effective, when moved by said operating member, to set said shutter to condition it for making an exposure, and lever means movable by adjustment of said shutter to take diiferent kinds of exposures, for cooperating with said second member to place said second member in operative or inoperative position-with respect to said operating member.

13. A photographic camera comprising a shutter including an arm settable to tension the shutter for making an exposure, means for feeding sensitized material, an operating member moved by movement of said feeding means, a second member having one portion for cooperation with said settable arm and another portion for co- I operation with said operatingmember, and means for shifting said second member from a position in which said other portion thereof is out 01 the the path of travel of said operating member so that movement of said feeding means will move said operatingmember and through it move said second member to shift said settable arm to tension the shutter.

14. A photographic camera comprising a shutter including an arm settable to tension the shutaces-m ter for making an exposure and a disk adjustable to diflerent positions for making diflerent kinds oi. exposures, said disk having a. recess therein,

. means for feeding sensitized material, mechanism operated by movement of said feeding means for shifting said settable arm to tension the shutter,

and a member having a portion engageable in said recess when said disk is in one' position and movable out of said recess when said disk is moved to another position, for controlling said 1 mechanism to render it operative and inoperative.

MICHAEL BURGER. 

